/**
 * 序列生成
 */
export function wxuuid() {
	var s = [];
	var hexDigits = "0123456789abcdef";

	for (var i = 0; i < 36; i++) {
		s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
	}

	s[14] = "4"; // bits 12-15 of the time_hi_and_version field to 0010

	s[19] = hexDigits.substr(s[19] & 0x3 | 0x8, 1); // bits 6-7 of the clock_seq_hi_and_reserved to 01

	s[8] = s[13] = s[18] = s[23] = "-";
	var uuid = s.join("");
	return uuid;
}
